IDEAS home Printed from
   My bibliography  Save this paper

Random Coefficients and Unbalanced Panels: An Application on Data from Norwegian Chemical Plants




A framework for analyzing substitution and scale properties, and technical change from plant-level panel data is presented. Focus is on comparing the constant and random coefficient specification of the substitution and scale parameters and investigating the potential variation of the parameters across firms. Characteristics of the model framework are (i) an equation system consisting of a three-factor translog cost function and the corresponding cost-share equations, (ii) random firm specific heterogeneity in coefficients, and (iii) a Maximum Likelihood procedure allowing for unbalanced panel data. The empirical results, based on data from Norwegian chemical plants, indicate substantial firm specific heterogeneity in substitution and scale properties.

Suggested Citation

  • Erik Biørn & Kjersti-Gro Lindquist, 1998. "Random Coefficients and Unbalanced Panels: An Application on Data from Norwegian Chemical Plants," Discussion Papers 235, Statistics Norway, Research Department.
  • Handle: RePEc:ssb:dispap:235

    Download full text from publisher

    File URL:
    Download Restriction: no

    References listed on IDEAS

    1. Hinterberger, Friedrich & Luks, Fred & Schmidt-Bleek, Friedrich, 1997. "Material flows vs. 'natural capital': What makes an economy sustainable?," Ecological Economics, Elsevier, vol. 23(1), pages 1-14, October.
    2. Patricia Kandelaars & Jeroen Bergh, 1996. "Materials-product chains: Theory and an application to zinc and PVC gutters," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 8(1), pages 97-118, July.
    Full references (including those not matched with items on IDEAS)


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. Kjersti-Gro Lindquist, 2002. "The Effect of New Technology in Payment Services on Banks' Intermediation," 10th International Conference on Panel Data, Berlin, July 5-6, 2002 B3-2, International Conferences on Panel Data.

    More about this item


    Panel Data. Random Coefficients. Unbalanced Data. Heterogeneity. Production technology;

    JEL classification:

    • C33 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Models with Panel Data; Spatio-temporal Models
    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
    • L65 - Industrial Organization - - Industry Studies: Manufacturing - - - Chemicals; Rubber; Drugs; Biotechnology; Plastics


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ssb:dispap:235. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (L Maasø). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.